Paying for International Carbon Credits from India (2026): Forex, GST and Remittance Checklist
Most guides to buying carbon credits stop at project selection. For an Indian company buying credits issued on an international registry, a second problem arrives after the decision: how do you actually pay a seller abroad, in which currency, with what tax treatment and with which paperwork? Finance teams that discover this at invoice stage lose weeks. This checklist is for the sustainability lead and CFO who want the payment side settled before the purchase order goes out.
Why cross-border payment is a procurement issue, not just a finance task
Credits on Verra or Gold Standard are usually sold by developers, brokers or retailers outside India, and invoiced in US dollars or euros. Credits issued in India under the national scheme are different: they are Indian instruments traded domestically. Which route you choose decides your payment mechanics, so the payment plan belongs in your procurement policy and your purchase agreement, not in a note to accounts payable after signing.
Three questions should be answered before you sign: who is the contracting entity (Indian or foreign), what currency the invoice carries, and when title and retirement happen relative to payment.
Step 1: Fix the contracting entity, currency and payment trigger
Contracting entity: an Indian seller invoicing in rupees with GST keeps the deal domestic. A foreign seller invoicing in dollars makes it a cross-border payment with its own paperwork.
Currency and exchange-rate clause: state whether the price is fixed in foreign currency and which date's rate applies for conversion. Without this, a rupee move between quote and payment becomes a budget variance.
Payment trigger: tie payment to a verifiable event, ideally transfer into your registry account or retirement, rather than a large advance for credits not yet issued. Forward deals deserve staged payments, as covered in our guide to spot, forward and offtake structures.
Invoice quality: the invoice should name your legal entity, describe the credits by registry, project ID, vintage and serial-number range, and state the quantity in tonnes of CO2e.
Step 2: Know what is settled and what is unsettled on tax
Indian tax treatment of carbon credits is still evolving, so the honest position is to separate what is clear from what is not.
Carbon Credit Certificates under the national scheme have been reported as attracting 18% GST, following a 2021 notification that raised the rate on such certificates from 12% to 18%. Our tax guide for Indian buyers covers the domestic accounting and tax view in more detail.
For credits bought electronically from an overseas seller, practitioners describe the position as partially unsettled. One commentary cites a Mumbai customs advance ruling on international RECs (United Breweries) as suggesting such intangible instruments fall outside customs duty, and argues by extension that reverse-charge GST on imported services may not apply. That is an inference from a ruling on a different instrument, not a direct holding on carbon credits.
If your tax adviser concludes the purchase is an import of services, GST is generally payable by you under reverse charge, reported in GSTR-3B, with input tax credit depending on your business use and the blocked-credit rules.
Do not let the invoice decide your tax position. Get a written view from your tax adviser on classification before the first foreign payment, and record it in the purchase file.
Treat the points above as context, not advice: tax rules and rulings change, so confirm every position against the official notifications and with a qualified professional.
Step 3: Run the remittance through your authorised dealer bank
Payments abroad go through an authorised dealer bank under India's foreign exchange framework. Ask your bank early what it needs for this specific purchase, because a carbon credit is an unusual line item for many branch teams. Typically you should expect to supply:
The signed contract or agreement covering scope, price and terms.
The foreign seller's commercial invoice with the registry and project details.
The remittance documentation your bank requires, which for payments to non-residents commonly includes Forms 15CA and 15CB under Rule 37BB of the Income-tax Rules, 1962, subject to your adviser's confirmation of whether they apply to your case.
Your GST registration details and, where applicable, the reverse-charge workings.
Because the seller is abroad, also check whether any tax needs to be deducted at source on the payment. That depends on the nature of the payment and the seller's residence, and is exactly the question to settle in Step 2.
Step 4: Link the payment to retirement and keep one audit trail
A remittance proves you paid. It does not prove you own the credit. Your evidence file should connect four documents: the contract, the invoice, the bank remittance record, and the registry retirement statement showing your company or its nominated beneficiary. Our 7-step retirement guide shows how to read that statement, and our note on registry differences between Verra and Gold Standard explains where each registry's retirement records live.
Keep the serial numbers consistent across all four documents. Auditors and assurance providers sampling a claim will start from the retirement statement and work backwards to the payment.
A pre-payment checklist for your finance team
Contracting entity, currency and conversion-rate date agreed in writing.
Tax classification view obtained from your adviser and filed.
Authorised dealer bank briefed and documentation list confirmed.
Payment tied to registry transfer or retirement, with a refund or replacement clause for invalidated credits.
Retirement statement and invoice cross-referenced by serial number before the cost is booked against a claim.
If you are still at the earlier stages, start with our step-by-step guide to buying carbon credits in India and return here once you have shortlisted projects.
Where Csquare fits
Csquare helps Indian companies source and retire credits and structure the commercial terms, so the contract, invoice and retirement evidence line up before money moves. If you are planning a purchase from an overseas registry, contact the Csquare team to review your payment structure and documentation before you sign.
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